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View Full Version : Anyone seen a pulley like this?



winchman
10-19-2012, 06:50 PM
It's a steel double groove adjustable pulley with a 5/8" ID and a 3/16" keyway. One setscrew locks it to the shaft, the other two lock the movable sections of the pulleys in position. OD is 3 1/4".

http://img.photobucket.com/albums/1003/winchman/MiscellaneousSeptember232012on004_zpsa01a15da.jpg

John Stevenson
10-19-2012, 06:55 PM
Yes......................

randyjaco
10-19-2012, 07:06 PM
Yeah, I have a larger version on my old Vernon shaper.

Randy

Guido
10-19-2012, 07:06 PM
Grainger, page 143, $130. How many do you need, when-----?

--G

sasquatch
10-19-2012, 08:00 PM
Have a few of those in Aluminum.

alanganes
10-19-2012, 08:08 PM
Yep, they are not uncommon items. They give you you a small range of speed ratio adjustment. As you move the sides apart the belt rides lower, decreasing the effective diameter.

HSS
10-19-2012, 08:33 PM
I use them to adjust the amperage load of the motor.

bandsawguy
10-19-2012, 10:08 PM
yup installed one on an old bandsaw. I believe they are adjustable between A width and B width but you can get a little speed adjustment as well.

winchman
10-19-2012, 11:54 PM
I've seen some single groove adjustable pulleys before, but never a double. It was in with some old stuff the electrical class was throwing out the other day.

Maybe I can re-purpose it for something. Suggestions?

Too bad it's not left and right threads. It would make a nice jacking device.

Black_Moons
10-20-2012, 12:32 AM
Seems to me it might be useful to tension the belt, slightly.. Or even the tension between two belts.. although I guess then they would fight eachother a little.

The Artful Bodger
10-20-2012, 12:36 AM
Seems to me it might be useful to tension the belt, slightly.. Or even the tension between two belts.. although I guess then they would fight eachother a little.

Yes, some old tractors, Massey Harris et al, used a device like this to tension the water pump belt.